Well, it looks like former President Barack Obama does more behind the scenes than we previously thought.

In 2020 Obama sent a scathing letter to his former White House physician-turned-Trump-loving-MAGA-politician in a previously unseen letter.

Rep. Ronny Jackson revealed an email Obama sent him during the 2020 campaign in his new book, according to Fox News. Jackson served as the White House physician for both Obama and Donald Trump, and there’s no doubt which president he preferred. Jackson even said with Trump’s superior genes he could live to be 200 years old.

Jackson told Fox News he got the email from Obama about 20 minutes after tweeting an attack on Biden’s cognitive health, suggesting that Biden should be given the same test for dementia that Jackson gave Trump. Jackson tweeted, “Remember the cognitive test that I gave Donald Trump? The one he aced! Sounds like somebody else might need some testing done!! Scary!!”

Remember the cognitive test I gave @realDonaldTrump? The one he aced! Sounds like somebody else might need some testing done!! Scary!! https://t.co/MhantZoHIy

— Ronny Jackson (@RonnyJacksonTX) February 25, 2020

Well, Obama was rather pissed about the tweet and immediately shot out the email to Jackson.

“I have made a point of not commenting on your service in my successor’s administration and have always spoken highly of you both in public and in private. You always served me and my family well, and I have considered you not only a fine doctor and service member but also a friend,” Obama wrote in the email to Jackson, according to Fox’s report.

“That’s why I have to express my disappointment at the cheap shot you took at Joe Biden via Twitter,” Obama continued. “It was unprofessional and beneath the office that you once held. It was also disrespectful to me and the many friends you had in our administration. You were the personal physician to the President of the United States as well as an admiral in the U.S. Navy. I expect better, and I hope upon reflection that you will expect more of yourself in the future.”

Trump made the test Jackson was referring to infamous with his “person, woman, man, camera, TV” quote in an interview with Fox News.

"Person. Woman. Man. Camera. TV." — Trump pushes back on those who think he's not all there pic.twitter.com/UNI8MiiMY8

— Aaron Rupar (@atrupar) July 23, 2020

According to Fox, Jackson was rather put back by the letter and didn’t know what to do. So, according to Mediaite:

Surprised and flustered by the email, Jackson ultimately chose not to respond. Jackson recalls considering whether to call the former president, but a friend of his, radio host and conservative commentator Dan Bongino, reminded him that Obama did nothing while Jackson was in the midst of a Senate confirmation fight to be Trump’s secretary for the Department of Veterans Affairs.

“So, upon reflection, I thought, You know what? Screw that guy! I’m not doing it,” Jackson wrote. “I just walked away from it, which was the last time I had any contact with [Obama],” Jackson wrote.

Jackson then went on and double down to Fox, saying that Biden’s “cognitive failures are on full display for the whole world to see,” and “he will not make it four years in office.”